Spark-arrester.



T o all 11:71am it may concern:

Be it known that I. Hrznnax A. HUR- TIEX'NE. a citizen of the United States, residing at Park Falls, in the county of Price, State of \Visconsin, have invented certain new and useful- Improvements in Spark-A rosters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains'to make and use the same- The present invention relates to improvements in spark arrestem adapted to be inserted within the smoke stack of a locomotive and secured in place therein, it being the object of the invention to provide an exceedingly simple as well as eiiicient device of that class, of the type above designated.

To this end, the invention consists in a screen body approximately X-shaped in vertical section adapted to be positioned in the smoke stack, the upper member of the screen being constr"cted of wire gauze, and the lower of perforated sheet metal, so that, while small cinders and bits of coal may pass freely through the meshes of the upper screen member, the latter will effectually prevent the escape of large bits of coal imtil sufficiently reduced to pass therethrough, such reduction being effected by their repeated passage through the slots in the lower screen member.

A further improvement consists in bending downwardlv the-flaps produced by the formation of the slots in the lower screen memher, so that they act as deflectors, the bits of coal and cinders striking thereagainst being positively deflected towards the lower end of the screen member, whence they fall through suitable openings formed therein to the bottom of the smoke st ask.

The invention will be readily understood from the following detailed description, and its preferred embodiment is illustrated in the accompanying drawings. in which like parts are designated by corresponding reference numerals in the several views;

Of the said drawingsFignre l is a front' elevation of a smoke-stack equipped with the present invention, a portion of the casing being broken away. Fig- 2 is a vertical section taken axially therethrongh. Fig. 3 is a fragmental perspective view illustrating a portion of the top section of the upper member of the screen.

Referring more particularly to the (llljRV- UNITED STATES PA HERMAN A. HURTIEXXE, or PARK SPARK-ARRE-STER.

Specification of Letters Patent. Application filed. February s, 1907. Serial No. 35719619. I

.5}? WISCONSIN.

fj' Patented Aug. 4, 1908.

. mgs, 5 designates the smoke-stack of a 1000 motive, within which the screen body 6 is disposed. This screen body comprises an upper member 7 and alower member 8, each;

of approximately frustofconical shape.

The upper member 7 is formed of some" foraminous material, preferably wire gauze" -and includes an upper'. collar 9, which bolted to the smoke-stackand a lower collar or flange 10, which fits within the upper end of the lower member 8 and is secured thereto by any preferred means. The top of the up per member is covered by a gauze strip 15, as shown in Fig. 3, the edge of said strip being connected in any preferred manner to said member. The lower member 8 which is formed of sheet-metal, likewise includes a collar 11 formed at its lower end and secured in like manner to the smoke-stack. The member 8 is further provided with a plu 1 OFFICE? 5 rality'of series of vertical slots or openings 12, which are formed by subjecting a sheet of metal to the action of a stamping press. The tongues 13 produced by the formation of the said slots, are bent outwardly from the finished member 8 and are downwardly inclined with respect thereto, as shown mFlg. 1, each tongue or flap being located at the upper end of the corresponding opening 12.

In addition to the vertical slots 12, above referred to, the member 8 is provided ad acent its lower edge with a series of horizontal slots 14, preferably four in number.

Vthen the completed screen 6 is in place in the smoke-stack, itwill be apparent that fine cinders and bits of coal may pass freely through the openings in the top section or cover 15 of the upper member 7, while larger bits of coal and cmders which cannot pass therethrough will fall back into the smokestack. Such bits of coal and cinders, however, as pass through the openings 12 in the member 8, will contact with the flaps 13 and be deflected thereby towards the bottom of said member, falling through the slots '14 therein back into the smoke-stack.

It will likewise be apparent that the cin-- the upper member 7, it bein understood that after each passage through the slots 12 and subsequent return to the smoke-stack through the slots 14, the cinders and coal areegain drawn upwardly by the upward draft and escaping steam and are again forced through the slots 12, whence they return to the smoke-stack, as above described.

I am aware that it has been proposed to make use of a spark arrester comprising two oppositely-disposed cone-shaped members,

one of which is formed of wire gauze and the other of sheetanetal, but my invention differs from such construction in that I make use of a single screening body formed of two positively connected members, while the cone'shaped members above referred to, are totally independent of each other. My invention further differs from theabove mentioned construction, in that I provide a positive deflector adjacent each the lower screen member.

'hat is claimed, is

1. A spark arrester adapted to be inserted within a smoke stadk and comprising a frusto-conical sheet-metal member provided with a series of horizontal slots disposed adjacent its lower edge and with a series of vertical slots, the flaps formed by said vertical slots being bent outwardly to form deflectors against which the cinders passing upwardly and outwardly through said slots are adapted to strike and be deflected through said horizontal slots into the smoke stack.

2., The combination, in a spark arrester, of

vertical slot of plurality of I a pair of superposed frusto-conical members connected together at their smaller ends, one of said members being formed of foraminous material, and the other member of vertically slotted sheet metal, the lastmentioned member being provided with an inclined outwardly bentdefiector formed at fi'ectors the cinders passing upwardly and outwardly through said slots are adapted to strike and be deflected into the smoke stack.

3. The combination, in a spark arrester, of a pair of superposed irusto-conical members connected together at their smaller ends, one of said members being formed of foraminous material, and the other member provided with a series of horizontal slots disposed adjacent its lower edge and with a plurality of series of vertical slots the flaps formed by said vertical slots being bent outwardly to form deflectors against which the cinders passing upwardly and outwardly through said slots are adapted to strike and be defiected through said horizontal slots in to the smoke stack.

In testimony whereof, I aflix my signature, in presence of two witnesses.

HERMAN A. HURTIENNEL- Witnesses:

J. B. SAUNDERS, Jim. B. GmEvEs.

the upper end of each slot against which dei f 2 P i l i i i l i 

